Answer:
-18.703
Step-by-step explanation:
a₁=-28(-1/2)¹⁻¹
r=-1/2
a₁=-28
r=-1/2
S₉=a₁
S₉=-28
S₉=
S₉=-18 S₉=-18.703125
Answer:
2. d is not a function
3. c
4. use a graphing calculator ( not rlly sure off the top of my head)
5. b
Answer:
1) {5,7}
2) {1,2,5,7}
Step-by-step explanation:
1) A union B union C
means you take common contents in all A,B,C
2) A and B and C
means you take all the contents of all A,B,C and combine
150 since rectangle has 4 sides, so 600 is divided to 4(sides)=150
Inessa = X
Ralph = Y
By the given ratio X/Y = 5/6
Solve for X: X = 5/6 * Y
Now Inessa gives 1/2 of hers to Ralph, which then totals 850"
Y + 1/2X = 850
Replace x :
Y + 1/2 * 5/6 * Y = 850
SImplify:
Y + 5/12Y = 850
Multiply both sides by 12 to remove the fraction:
12Y + 5Y = 10200
Simplify:
17Y = 10200
Divide both sides by 17:
y = 10200 / 17
y = 600
Ralph originally had 600 plants.